The frequency conversion transformer comprehensive tester is a specialized equipment used to test the performance parameters of current transformers (CT) and voltage transformers (PT), using frequency conversion technology to achieve efficient and accurate testing. Its core functions and application features are as follows:
1. Core functions
① Variable frequency testing technology
By adjusting the power frequency and reducing the required voltage for testing, the risk of equipment damage from high voltage in traditional testing can be avoided.
For example, when testing the volt ampere characteristics of CT, traditional methods require the application of several kilovolts of voltage, while frequency conversion technology can reduce the voltage demand to several hundred volts by lowering the frequency (such as 5Hz) while maintaining the same excitation effect.
② Multi parameter comprehensive testing
Voltage current characteristic test: Draw the excitation curve of the transformer and analyze the saturation point.
Ratio test: Verify the ratio accuracy of the transformer.
Polarity test: Determine the polarity relationship between the primary and secondary sides of the transformer.
Error curve testing: Generate 5% and 10% error curves to evaluate the accuracy of the transformer under rated load.
Secondary circuit inspection: Check whether the secondary circuit is open or short circuited.
③ Automation and Intelligence
Built in computer system, automatically completes testing process and generates testing reports.
Support data storage, printing, and export for subsequent analysis.
2. Technical advantages
① High security
Frequency conversion technology reduces the testing voltage and minimizes safety risks for operators and equipment.
② High testing efficiency
Multiple tests can be completed on a single machine without the need for external auxiliary equipment, reducing testing time.
③ Wide testing scope
Suitable for various types of CT and PT, including protective, metering, and TP transformers.
④ High precision
For example, the measurement range of the variable ratio can reach 1-30000, with an allowable error of ± 0.1% for the ratio difference and ± 5 minutes for the angle difference, meeting the requirements of high-precision testing.
3. Application scenarios
① Power equipment maintenance
Used for regular inspection and maintenance of transformers in substations, power plants, and other places.
② New equipment acceptance
Perform performance verification on newly installed transformers to ensure they meet design requirements.
③ Fault diagnosis
By testing the various parameters of the transformer, determine whether there are faults or performance degradation.
4. Example of Technical Parameters
Input power supply: single-phase AC220V, 50Hz.
Output voltage: 0-2500V (maximum output of a single machine).
Output current: 0-1000A (maximum single machine output).
Frequency range: Supports variable frequency regulation (such as 5Hz-50Hz).
Test items: volt ampere characteristics, transformation ratio, polarity, error curve, secondary side circuit inspection, etc.
Data storage: Large capacity storage, supports USB drive export.
5. Application value
Improve testing efficiency: Complete multiple tests on a single machine, reducing the complexity of on-site operations.
Ensuring equipment safety: Frequency conversion technology reduces testing risks and extends the service life of transformers.
Compliant with industry standards: The test results meet relevant national maintenance regulations, ensuring reliable performance of the transformer.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
